Measurement for a stock fan

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patmckinneyracing

Royal Smart Person
Jan 18, 2009
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San Antonio, TX
I'm replacing the stock fan in my 80 chevy malibu and was wondering if anyone knows the measurement? Im in college and didn't bring a tape measure. Instead I used a piece of paper since its 11 inches long. The paper went from the tip of one blade to about an inch past the center of the fan. I'm still not sure though.
 
won't see my car for two weeks, i can take it then if you need it, still
 
Problem is, even though I swapped out the fan clutch for a straight clutch, the stupid clutch went out while I was driving. Normally, I would have to press down pretty hard to rotate the fan. Now it spins easily and the car got up to 270 the other day, which scared me. Then when I had the car running, after cooling down, the fan isn't keeping up with the rotation of the motor and is barely pulling any air. So now I'm swapping out the whole set up for a flex fan and my dad is giving me a single electric fan to put on the front of the radiator for extra cooling power. But I'm not sure if its a 15 in. or 18 in. or whatever.
 
Damn, IO just replaced mine a few months back with a flex fan. I can't remember the size right now. But I'm going to work on the car today (if I can get in the garage lol) and I'll measure mine.
 
I went out and bought a tape measure and found the fan is 19in. I'm going to be putting on a flex fan as well along with a large single electric fan at the front of the radiator to give it that extra bit of air.
 
I used an 18" one on mine. If you wanna save money (and overheating isn't a problem for you) there is a company that makes plastic flex fans. They are black and look pretty good. I guess a lot of the stock car guys up here use them. I ran one for years, but after being swapped between 3 cars and 5-6 winters, it did blow apart on me. But it was like -35 at the time. These fans have a really aggressive blade angle, so they move A LOT of air. In fact, I could hear the fan over my glasspacks lol.
 
Flex fans make a lot of noise and drag your motor down..... They tend to break easy or at least it did on mine. If you have a solid cooling system you should be fine. I run a 4 core radiator, stock water pump, heavy duty fan clutch, 180 T-stat and a V-6 fan off an S-15. My car runs 180-190 all day long with A/C and in 100 degree weather. I have a mild 350 Chevy in my 82.
 
So far I do like the sound of the flex fan. Does make a bit of noise but more to the effect of a blower or those noisy gears. At the same time, my ole man gave me a S blade electric fan that I put at the front of the radiator for extra cooling. I have a 160 stant thermostat, stock water pump, and a 3 core radiator. Mild 350 with 202 heads and a .442/.460 summit cam. Plus being in south texas, the name of the game is stay cool. That motor got so hot when that fan when out it blew the cap clean off my overflow tank. I was pissed cause I swapped out the clutch a year ago \for a straight one instead of that temp. w/e clutch. I'm sure with the flex fan the car will cool fine, that's why I have the electric fan hooked up to a switch so I can turn it on whenever rather than have a temp sensor. Tested the whole set up out and the car didn't get over 150 but that is probably cause its night time and fairly cool outside for being south texas.
 
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